FPS Softair Full Tune Up Kit For M4/M16

Code: KMCP3
  • Full cylinder group upgrade kit
  • For AEG version 2 gearboxes
  • For M4/M16

Upgrade your M4/M16 AEG. with an FPS Softair Tune Up Kit and increase its reliability and performance. The high-quality O-Rings ensure that it eliminates air leak and gives you perfect air seal for maximum efficiency and power. Constructed from Ergal (Aluminium 7075), the cylinder has a high strength and is resistant to fatigue with increased durability. The cylinder head is made for use with version 2 gearboxes, compatible with Tokyo Marui derived designs, with barrel lengths of 251 to 300mm.

This tune-up kit includes:

  • Cylinder (CLTC)
  • Cylinder Head (TC02E)
  • Air Nozzle with O-Ring for M4/M16 (SPM4E)
  • Double O-Ring Ball Bearing AEG Piston Head Advanced Type (TPAVN)

Full description



  • CNC Ergal construction
  • For version 2 gearbox
  • Improves performance and durability
  • Perfect air seal
  • For TM derived M4/M16
  • For use with barrel lengths of 251 to 300mm

Package Includes

  • FPS Softair Tune Up Kit For M4/M16



Internal Part Type
Cylinder, Cylinder Head, Nozzle, Piston Head, Piston Head O-Ring,
Patrol Base - Warning Icon
Patrol Base - Warning Icon
Parts Fitting

Weight and Dimension

Weight KG Icon
Weight (KG)
Approx. 0.057kg
Product Height
Approx. 7.3cm
Product Length
Approx. 2.6cm
Product Width
Approx. 2.6cm


Internal Part Construction
Polymer, Alloy, Steel, Rubber, 7075 Aluminium,

Part Specific

Part for Power Source Type
Weapon Platform
M4 / AR-15 / M16

Electric Part Specific

Gearbox Icon
Gearbox Version
V2 Gearbox

Size guide

Parts Fitting

Upgrades and Downgrades should only be undertaken by experienced players, or Airsoft Technicians. Please note, changing any internal parts of a weapon voids its warranty unless done in-house by our staff. 

Please ensure that when fitting parts the part purchased is the correct part, as once a part has been fitted we cannot accept return.

We do know that players love to tinker, so we're here to give you help should you require it, and if needed you can get in touch with our workshop for more help!

Unique Parts

Please note that some parts may be unique to a specific brand of weapon. For example: Parts for an ASG M4A1 may not fit an ICS M4A1.

Parts from the same brand typically have a high chance of fitting, though be warned, some replicas use unique parts, so please ensure the part will fit before you attempt to fit it.

If you require help with fitting any parts feel free to get in touch with us via our Contact Us Page.